org.glassfish.persistence.jpa.JPAJava2DBProcessor Maven / Gradle / Ivy
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package org.glassfish.persistence.jpa;
import com.sun.enterprise.deployment.Application;
import com.sun.enterprise.deployment.PersistenceUnitsDescriptor;
import com.sun.enterprise.deployment.PersistenceUnitDescriptor;
import org.glassfish.api.deployment.DeploymentContext;
import org.glassfish.persistence.common.*;
import org.glassfish.internal.api.Globals;
import org.jvnet.hk2.component.Habitat;
import java.io.File;
import java.io.IOException;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.sun.logging.LogDomains;
import javax.naming.NamingException;
import javax.persistence.EntityManagerFactory;
import javax.persistence.spi.PersistenceUnitInfo;
import javax.persistence.spi.PersistenceProvider;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.SQLException;
/**
* For each persistence unit descriptors that is defined for
* an application create the ddl scripts. Additionally if the
* user has requested the tables to be created or dropped from
* the database complete that action too.
*
* These are the principles and expectations of the implementation.
* We don't want TopLink code to execute the DDLs, it should only
* generate them. So, we always set the *generation-mode* to *script*
* in the PUInfo object before passing it to createContainerEMF().
* As a result TopLink never creates the actual tables, nor does it drop
* them. The DDLs are executed by our code based on user preference which
* considers inputs from persistence.xml and CLI. We set the TopLink
* property to DROP_AND_CREATE in that map because we want it to always
* generate both create- and dropDDL.jdbc files.
* @author pramodg
*/
public class JPAJava2DBProcessor {
// Defining the persistence provider class names here that we would use to
// check if java2db is supported.
private static final String TOPLINK_PERSISTENCE_PROVIDER_CLASS_NAME_OLD =
"oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider"; // NOI18N
private static final String TOPLINK_PERSISTENCE_PROVIDER_CLASS_NAME_NEW =
"oracle.toplink.essentials.PersistenceProvider"; // NOI18N
private static final String ECLIPSELINK_PERSISTENCE_PROVIDER_CLASS_NAME =
"org.eclipse.persistence.jpa.PersistenceProvider"; // NOI18N
// Constants for various property values.
// Following constants are actually defined in
// oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider
// and org.eclipse.persistence.jpa.config.PersistenceUnitProperties
// This code assumes that the value of constant at both the place is same
private static final String CREATE_ONLY = "create-tables"; //NOI18N
private static final String DROP_AND_CREATE = "drop-and-create-tables"; //NOI18N
private static final String NONE = "none"; //NOI18N
private static final String DDL_BOTH_GENERATION = "both"; //NOI18N
private static final String DDL_DATABASE_GENERATION = "database"; //NOI18N
private static final String DDL_SQL_SCRIPT_GENERATION = "sql-script"; //NOI18N
// Constatns defined in oracle.toplink.essentials.config.TargetServer
// and org.eclipse.persistence.jpa.config.TargetServer
private static final String SunAS9 = "SunAS9"; //NOI18N
// property names for Toplink and EclipseLink
private static final String TOPLINK_DDL_GENERATION = "toplink.ddl-generation"; // NOI18N
private static final String ECLIPSELINK_DDL_GENERATION = "eclipselink.ddl-generation"; // NOI18N
private static final String TOPLINK_DDL_GENERATION_MODE = "toplink.ddl-generation.output-mode"; // NOI18N
private static final String ECLIPSELINK_DDL_GENERATION_MODE = "eclipselink.ddl-generation.output-mode"; // NOI18N
private static final String TOPLINK_APP_LOCATION = "toplink.application-location"; // NOI18N
private static final String ECLIPSELINK_APP_LOCATION = "eclipselink.application-location"; // NOI18N
private static final String TOPLINK_CREATE_JDBC_DDL_FILE = "toplink.create-ddl-jdbc-file-name"; // NOI18N
private static final String ECLIPSELINK_CREATE_JDBC_DDL_FILE = "eclipselink.create-ddl-jdbc-file-name"; // NOI18N
private static final String TOPLINK_DROP_JDBC_DDL_FILE = "toplink.drop-ddl-jdbc-file-name"; // NOI18N
private static final String ECLIPSELINK_DROP_JDBC_DDL_FILE = "eclipselink.drop-ddl-jdbc-file-name"; // NOI18N
private static Logger logger = LogDomains.getLogger(JPAJava2DBProcessor.class, LogDomains.PERSISTENCE_LOGGER);
/**
* Holds name of provider specific properties.
*/
private ProviderPropertyNamesHolder providerPropertyNamesHolder;
private String ddlMode;
private Java2DBProcessorHelper helper = null;
/**
* Creates a new instance of JPAJava2DBProcessor using Java2DBProcessorHelper
* @param helper the Java2DBProcessorHelper instance to be used
* with this processor.
*/
public JPAJava2DBProcessor(Java2DBProcessorHelper helper) {
this.helper = helper;
this.helper.init();
}
/**
* This method does parses all relevant info from the PU
* @param bundle the persistence unit descriptor that is being worked on.
* @return true if this PU requires java2db processing
*/
public boolean isJava2DbPU(PersistenceUnitDescriptor bundle) {
String providerClassName = getProviderClassName(bundle);
// Initialize with EL names for each bundle to handle apps that have
// multiple pus
providerPropertyNamesHolder = new ProviderPropertyNamesHolder();
// Override with TLE names if running against TLE
if (TOPLINK_PERSISTENCE_PROVIDER_CLASS_NAME_NEW.equals(providerClassName) ||
TOPLINK_PERSISTENCE_PROVIDER_CLASS_NAME_OLD.equals(providerClassName)) {
// for backward compatibility
providerPropertyNamesHolder.appLocation = TOPLINK_APP_LOCATION;
providerPropertyNamesHolder.createJdbcDdlFile = TOPLINK_CREATE_JDBC_DDL_FILE;
providerPropertyNamesHolder.dropJdbcDdlFile = TOPLINK_DROP_JDBC_DDL_FILE;
providerPropertyNamesHolder.ddlGeneration = TOPLINK_DDL_GENERATION;
providerPropertyNamesHolder.ddlGenerationMode = TOPLINK_DDL_GENERATION_MODE;
}
String ddlGenerate = getPersistencePropVal(bundle,
providerPropertyNamesHolder.ddlGeneration, NONE);
ddlMode = getPersistencePropVal(bundle,
providerPropertyNamesHolder.ddlGenerationMode, DDL_BOTH_GENERATION);
// If CLI options are not set, use value from the the ddl-generate property
// if defined in persistence.xml
boolean userCreateTables = (ddlGenerate.equals(CREATE_ONLY)
|| ddlGenerate.equals(DROP_AND_CREATE))
&& !ddlMode.equals(NONE);
boolean createTables = helper.getCreateTables(userCreateTables);
boolean userDropTables = ddlGenerate.equals(DROP_AND_CREATE)
&& (ddlMode.equals(DDL_DATABASE_GENERATION)
|| ddlMode.equals(DDL_BOTH_GENERATION));
if (logger.isLoggable(Level.FINE)) {
logger.fine("Processing request with create tables: " + createTables //NOI18N
+ ", drop tables: " + userDropTables); //NOI18N
}
if (!createTables && !userDropTables) {
// Nothing to do.
return false;
}
if (! isSupportedPersistenceProvider(bundle)) {
// Persistence provider is not supported, hence exit from java2db code
if (helper.hasDeployCliOverrides()) {
helper.logI18NWarnMessage(
"Java2DBProcessorHelper.nondefaultprovider",
getProviderClassName(bundle),
bundle.getName(), null);
}
return false;
}
helper.setProcessorType("JPA", bundle.getName()); // NOI18N
helper.setDropTablesValue(userDropTables, bundle.getName());
helper.setCreateTablesValue(userCreateTables && !ddlMode.equals(DDL_SQL_SCRIPT_GENERATION),
bundle.getName());
helper.setJndiName(bundle.getJtaDataSource(), bundle.getName());
constructJdbcFileNames(bundle);
if (logger.isLoggable(Level.FINE)) {
logger.fine("Processing request to create files - create file: " + //NOI18N
helper.getCreateJdbcFileName(bundle.getName())
+ ", drop file: " + //NOI18N
helper.getDropJdbcFileName(bundle.getName()));
}
addPropertiesToPU(bundle);
return true;
}
/**
* Construct the name of the create and
* drop jdbc ddl files that would be
* created. These name would be either
* obtained from the persistence.xml file
* (if the user has defined them) or we would
* create default filenames
* @param parBundle the persistence unit descriptor that is being worked on.
*/
private void constructJdbcFileNames(PersistenceUnitDescriptor parBundle) {
String createJdbcFileName =
getPersistencePropVal(parBundle,
providerPropertyNamesHolder.createJdbcDdlFile, null);
String dropJdbcFileName =
getPersistencePropVal(parBundle,
providerPropertyNamesHolder.dropJdbcDdlFile, null);
if((null != createJdbcFileName) && (null != dropJdbcFileName)) {
return;
}
String filePrefix =
Java2DBProcessorHelper.getDDLNamePrefix(parBundle.getParent().getParent());
if(null == createJdbcFileName) {
createJdbcFileName = filePrefix + DatabaseConstants.NAME_SEPARATOR + parBundle.getName() +
DatabaseConstants.CREATE_DDL_JDBC_FILE_SUFFIX;
}
if(null == dropJdbcFileName) {
dropJdbcFileName = filePrefix + DatabaseConstants.NAME_SEPARATOR + parBundle.getName() +
DatabaseConstants.DROP_DDL_JDBC_FILE_SUFFIX;
}
helper.setCreateJdbcFileName(createJdbcFileName, parBundle.getName());
helper.setDropJdbcFileName(dropJdbcFileName, parBundle.getName());
}
/**
* This method is called after the jdbc files have been created.
* Iterate over all created jdbc ddl files and
* execute it against the database to have the required objects created.
*/
public void createTablesInDB() {
helper.createOrDropTablesInDB(true, "JPA"); // NOI18N
}
/**
* Since the ddl files are actually created
* by the toplink code, we ensure that the
* correct properties are put in the persistence
* unit info object.
* @param puDescriptor the persistence unit descriptor that is being worked on.
*/
private void addPropertiesToPU(PersistenceUnitDescriptor puDescriptor) {
addPropertyToDescriptor(puDescriptor, providerPropertyNamesHolder.appLocation,
helper.getGeneratedLocation(puDescriptor.getName()));
addPropertyToDescriptor(puDescriptor, providerPropertyNamesHolder.createJdbcDdlFile,
helper.getCreateJdbcFileName(puDescriptor.getName()));
addPropertyToDescriptor(puDescriptor, providerPropertyNamesHolder.dropJdbcDdlFile,
helper.getDropJdbcFileName(puDescriptor.getName()));
}
/**
* Utility method that is used to actually set the property into the persistence unit descriptor.
* @param descriptor the persistence unit descriptor that is being worked on.
* @param propertyName the name of the property.
* @param propertyValue the value of the property.
*/
private void addPropertyToDescriptor(PersistenceUnitDescriptor descriptor,
String propertyName, String propertyValue) {
String oldPropertyValue = descriptor.getProperties().getProperty(propertyName);
if(null == oldPropertyValue) {
descriptor.addProperty(propertyName, propertyValue);
}
}
/**
* Given a persistence unit descriptor
* return the value of a property if the
* user has specified it.
* If the user has not defined this property
* return the default value.
* @param parBundle the persistence unit descriptor that is being worked on.
* @param propertyName the property name being checked.
* @param defaultValue the default value to be used.
* @return the property value.
*/
private String getPersistencePropVal(PersistenceUnitDescriptor parBundle,
String propertyName, String defaultValue) {
return parBundle.getProperties().getProperty(propertyName, defaultValue);
}
/**
* The java2db feature is currently implemented only for toplink (the default
* persistence povider in glassfish). Hence we check for the name of the
* persistence provider class name. It it is not toplink, stop processing.
*
* @param persistenceUnitDescriptor the persistence unit descriptor that is being worked on.
* @return true if persistence provider is toplink.
*/
private boolean isSupportedPersistenceProvider(
final PersistenceUnitDescriptor persistenceUnitDescriptor) {
String providerClassName = getProviderClassName(persistenceUnitDescriptor);
return providerClassName.equals(TOPLINK_PERSISTENCE_PROVIDER_CLASS_NAME_OLD) ||
providerClassName.equals(TOPLINK_PERSISTENCE_PROVIDER_CLASS_NAME_NEW) ||
providerClassName.equals(ECLIPSELINK_PERSISTENCE_PROVIDER_CLASS_NAME);
}
/**
* Create and read the ddl file constructing the proper disk location.
* @param bundle the persistence unit descriptor that is being worked on.
* @param fileName the name of the file.
* @param create true if this event results in creating tables.
* @return the jdbc ddl file.
*/
private File getDDLFile(PersistenceUnitDescriptor bundle,
String fileName, boolean create) {
// Application location might be already set to the
// generated directory but that would happen only if the
// deploy happened in the same VM as a redeploy or an undeploy.
String appLocation = getPersistencePropVal(bundle,
providerPropertyNamesHolder.appLocation,
helper.getGeneratedLocation(bundle.getName()));
helper.setGeneratedLocation(appLocation, bundle.getName());
// Delegate the rest to the helper instance.
return helper.getDDLFile(appLocation + File.separator + fileName, create);
}
/**
* Return provider class name as specified in the persistence.xml
* or the default provider as known to the system.
* @param persistenceUnitDescriptor the persistence unit descriptor.
* @return provider class name as a String
*/
private String getProviderClassName(
PersistenceUnitDescriptor persistenceUnitDescriptor) {
return PersistenceUnitInfoImpl.getPersistenceProviderClassNameForPuDesc(
persistenceUnitDescriptor);
}
/**
* Holds names of provider specific property
*/
private static class ProviderPropertyNamesHolder {
// Initialize property names with EL specific properties
String appLocation = ECLIPSELINK_APP_LOCATION;
String createJdbcDdlFile = ECLIPSELINK_CREATE_JDBC_DDL_FILE;
String dropJdbcDdlFile = ECLIPSELINK_DROP_JDBC_DDL_FILE;
String ddlGeneration = ECLIPSELINK_DDL_GENERATION;
String ddlGenerationMode = ECLIPSELINK_DDL_GENERATION_MODE;
}
}
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